#region Licence
// Copyright (c) 2008 Tasman Logic Ltd

// Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
// and associated documentation files (the "Software"), to deal in the Software without restriction, 
// including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
// and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
// subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all copies 
// or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT 
// NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Collections.Generic;

namespace ActiveSharp.Utils
{

    /// <summary>
    /// A lazy dictionary keyed by Type
    /// </summary>
    public class LazyDictionaryOfTypes<TValue>: LazyDictionary<Type, TValue> where TValue: class
    {
        public LazyDictionaryOfTypes(LazyLoadValueDelegate<Type, TValue> getValue) 
            : base(GetAssemblyTypes, getValue)
        {}

        /// <summary>
        /// For the given known type, enumerate all the types in its assembly, so that they too can be loaded (eagerly) into the dictionary
        /// </summary>
        static IEnumerable<Type> GetAssemblyTypes(Type knownType)
        {
            foreach (Type type in knownType.Assembly.GetTypes())
                yield return type;       
        }
    }
}
